2025-04-23 17:54:31 +08:00
<!DOCTYPE html> < html xmlns = "http://www.w3.org/1999/xhtml" xml:lang = "zh-cn" lang = "zh-cn" data-whc_version = "26.1" >
2025-07-22 11:15:46 +08:00
< head > < meta http-equiv = "Content-Type" content = "text/html; charset=UTF-8" / > < meta name = "viewport" content = "width=device-width, initial-scale=1.0" / > < meta http-equiv = "X-UA-Compatible" content = "IE=edge" / > < meta name = "DC.rights.owner" content = "(C) 版权 2025" / > < meta name = "copyright" content = "(C) 版权 2025" / > < meta name = "generator" content = "DITA-OT" / > < meta name = "DC.type" content = "concept" / > < meta name = "description" content = "作为一种典型的内存配置使用场景， ， / > < meta name = "DC.relation" content = "../../../topics/sdk/mem/d13x_mem_guide.html" / > < meta name = "DC.relation" content = "../../../topics/sdk/mem/d13x_mem_guide.html" / > < meta name = "DC.relation" content = "../../../topics/sdk/mem/d13x-mem-2-tcm-sram-psram.html" / > < meta name = "DC.contributor" content = "yan.wang" / > < meta name = "DC.creator" content = "yan.wang" / > < meta name = "DC.date.modified" content = "2025-05-16" / > < meta name = "DC.format" content = "HTML5" / > < meta name = "DC.identifier" content = "d13x-mem-1-sram-psram" / > < meta name = "DC.language" content = "zh-CN" / >
< title > SRAM + PSRAM< / title > <!-- Generated with build number 2025051600. --> < meta name = "wh-path2root" content = "../../../" / > < meta name = "wh-toc-id" content = "d13x-mem-1-sram-psram-d3752e2683" / > < meta name = "wh-source-relpath" content = "topics/sdk/mem/d13x-mem-1-sram-psram.dita" / > < meta name = "wh-out-relpath" content = "topics/sdk/mem/d13x-mem-1-sram-psram.html" / >
2025-01-23 16:37:00 +08:00
2025-04-23 17:54:31 +08:00
< link rel = "stylesheet" type = "text/css" href = "../../../webhelp/app/commons.css?buildId=2024041900" / >
< link rel = "stylesheet" type = "text/css" href = "../../../webhelp/app/topic.css?buildId=2024041900" / >
2025-01-23 16:37:00 +08:00
2025-07-22 11:15:46 +08:00
< script src = "../../../webhelp/app/options/properties.js?buildId=20250519091401" > < / script >
2025-04-23 17:54:31 +08:00
< script src = "../../../webhelp/app/localization/strings.js?buildId=2024041900" > < / script >
2025-07-22 11:15:46 +08:00
< script src = "../../../webhelp/app/search/index/keywords.js?buildId=20250519091401" > < / script >
2025-04-23 17:54:31 +08:00
< script defer = "defer" src = "../../../webhelp/app/commons.js?buildId=2024041900" > < / script >
< script defer = "defer" src = "../../../webhelp/app/topic.js?buildId=2024041900" > < / script >
< link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/aic-styles-web-internal.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/notes.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/aic-common.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/aic-images.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/footnote.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/aic-highlight-changes.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/search-in-header.css?buildId=2024041900" / > < link rel = "stylesheet" type = "text/css" href = "../../../webhelp/template/css/topic-body-list.css?buildId=2024041900" / > < / head >
2025-01-23 16:37:00 +08:00
< body id = "d13x-mem-1-sram-psram" class = "wh_topic_page frmBody" >
< a href = "#wh_topic_body" class = "sr-only sr-only-focusable" >
跳转到主要内容
< / a >
< header class = "navbar navbar-default wh_header" >
< div class = "container-fluid" >
2025-04-23 17:54:31 +08:00
< div xmlns:whc = "http://www.oxygenxml.com/webhelp/components" class = "wh_header_flex_container navbar-nav navbar-expand-md navbar-dark" >
2025-01-23 16:37:00 +08:00
< div class = "wh_logo_and_publication_title_container" >
< div class = "wh_logo_and_publication_title" >
2025-04-23 17:54:31 +08:00
< a href = "https://www.artinchip.com" class = " wh_logo d-none d-sm-block " > < img src = "../../../company-logo.png" alt = " RTOS SDK 使用指南 SDK 指南文件 " / > < / a >
< div class = " wh_publication_title " > < a href = "../../../index.html" > < span class = "booktitle" > < span class = "ph mainbooktitle" > RTOS SDK 使用指南< / span > < span class = "ph booktitlealt" > SDK 指南文件< / span > < / span > < / a > < / div >
2025-01-23 16:37:00 +08:00
< / div >
< / div >
< div class = "wh_top_menu_and_indexterms_link collapse navbar-collapse" id = "wh_top_menu_and_indexterms_link" >
< / div >
< div class = " wh_search_input navbar-form wh_topic_page_search search " role = "form" >
< form id = "searchForm" method = "get" role = "search" action = "../../../search.html" > < div > < input type = "search" placeholder = "搜索 " class = "wh_search_textfield" id = "textToSearch" name = "searchQuery" aria-label = "搜索查询" required = "required" / > < button type = "submit" class = "wh_search_button" aria-label = "搜索" > < span class = "search_input_text" > 搜索< / span > < / button > < / div > < / form >
2025-04-23 17:54:31 +08:00
< / div > < / div >
< / div >
< / header >
2025-01-23 16:37:00 +08:00
< div class = "container-fluid" id = "wh_topic_container" >
< div class = "row" >
< nav class = "wh_tools d-print-none navbar-expand-md" aria-label = "Tools" >
2025-04-23 17:54:31 +08:00
< div data-tooltip-position = "bottom" class = " wh_breadcrumb " > < ol class = "d-print-none" > < li > < span class = "home" > < a href = "../../../index.html" > < span > 主页< / span > < / a > < / span > < / li > < li > < div class = "topicref" data-id = "id" > < div class = "title" > < a href = "../../../topics/sdk/chapter-advanced-app.html" > 高级应用< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > 系统、存储、多媒体、接口、安全等模块的详细配置和设计说明。< / p > < / div > < / div > < / div > < / li > < li > < div class = "topicref" data-id = "chapter-system" > < div class = "title" > < a href = "../../../topics/chapter-title/chapter-system.html" > 系统< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > < / p > < / div > < / div > < / div > < / li > < li > < div class = "topicref" data-id = "chapter-memory" > < div class = "title" > < a href = "../../../topics/sdk/mem/memory-user-guide.html" > Memory 使用指南< / a > < / div > < / div > < / li > < li > < div class = "topicref" data-id = "d13x-mem-guide" > < div class = "title" > < a href = "../../../topics/sdk/mem/d13x_mem_guide.html" > < span class = "ph" > D13x< / span > 内存使用指南< / a > < / div > < / div > < / li > < li class = "active" > < div class = "topicref" data-id = "d13x-mem-1-sram-psram" > < div class = "title" > < a href = "../../../topics/sdk/mem/d13x-mem-1-sram-psram.html" > SRAM + PSRAM< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > < / p > < / div > < / div > < / div > < / li > < / ol > < / div >
2025-01-23 16:37:00 +08:00
< div class = "wh_right_tools" >
< button class = "wh_hide_highlight" aria-label = "切换搜索突出显示" title = "切换搜索突出显示" > < / button >
< button class = "webhelp_expand_collapse_sections" data-next-state = "collapsed" aria-label = "折叠截面" title = "折叠截面" > < / button >
< div class = " wh_navigation_links " > < span id = "topic_navigation_links" class = "navheader" >
2025-04-23 17:54:31 +08:00
< span class = "navprev" > < a class = "- topic/link link" href = "../../../topics/sdk/mem/d13x_mem_guide.html" title = "D13x 内存使用指南" aria-label = "上一主题: D13x 内存使用指南" rel = "prev" > < / a > < / span >
2025-01-23 16:37:00 +08:00
< span class = "navnext" > < a class = "- topic/link link" href = "../../../topics/sdk/mem/d13x-mem-2-tcm-sram-psram.html" title = "TCM + SRAM + PSRAM" aria-label = "下一主题: TCM + SRAM + PSRAM" rel = "next" > < / a > < / span > < / span > < / div >
< div class = " wh_print_link print d-none d-md-inline-block " > < button onClick = "window.print()" title = "打印此页" aria-label = "打印此页" > < / button > < / div >
< button type = "button" id = "wh_toc_button" class = "custom-toggler navbar-toggler collapsed wh_toggle_button navbar-light" aria-expanded = "false" aria-label = "Toggle publishing table of content" aria-controls = "wh_publication_toc" >
< span class = "navbar-toggler-icon" > < / span >
< / button >
< / div >
< / nav >
< / div >
< div class = "wh_content_area" >
< div class = "row" >
< nav id = "wh_publication_toc" class = "col-lg-3 col-md-3 col-sm-12 d-md-block d-none d-print-none" aria-label = "Table of Contents Container" >
< div id = "wh_publication_toc_content" >
2025-07-22 11:15:46 +08:00
< div class = " wh_publication_toc " data-tooltip-position = "right" > < span class = "expand-button-action-labels" > < span id = "button-expand-action" role = "button" aria-label = "Expand" > < / span > < span id = "button-collapse-action" role = "button" aria-label = "Collapse" > < / span > < span id = "button-pending-action" role = "button" aria-label = "Pending" > < / span > < / span > < ul role = "tree" aria-label = "Table of Contents" > < li role = "treeitem" > < div data-tocid = "revinfo_linux-d3752e463" class = "topicref" data-id = "revinfo_linux" data-state = "leaf" > < span role = "button" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/revinfo/revinfo_rtos.html" id = "revinfo_linux-d3752e463-link" > 修订记录< / a > < / div > < / div > < / li > < li role = "treeitem" aria-expanded = "false" > < div data-tocid = "id-d3752e480" class = "topicref" data-id = "id" data-state = "not-ready" > < span role = "button" tabindex = "0" aria-labelledby = "button-expand-action id-d3752e480-link" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/sdk/env/sdk-compile.html" id = "id-d3752e480-link" > SDK 编译< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > 介绍不同编译环境下 SDK 的详细编译流程。< / p > < / div > < / div > < / div > < / li > < li role = "treeitem" aria-expanded = "false" > < div data-tocid = "id-d3752e604" class = "topicref" data-id = "id" data-state = "not-ready" > < span role = "button" tabindex = "0" aria-labelledby = "button-expand-action id-d3752e604-link" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/sdk/advanced/sdk-usage.html" id = "id-d3752e604-link" > 使用指南< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > 命令详解，编译选项，镜像和分区配置，添加应用和驱动等的详细使用说明。< / p > < / div > < / div > < / div > < / li > < li role = "treeitem" aria-expanded = "false" > < div data-tocid = "concept_rcx_czh_pzb-d3752e1004" class = "topicref" data-id = "concept_rcx_czh_pzb" data-state = "not-ready" > < span role = "button" tabindex = "0" aria-labelledby = "button-expand-action concept_rcx_czh_pzb-d3752e1004-link" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/sdk/chapter-app.html" id = "concept_rcx_czh_pzb-d3752e1004-link" > 应用场景< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > 描述了 SDK 在不同应用场景中的配置和使用， < / p > < / div > < / div > < / div > < / li > < li role = "treeitem" aria-expanded = "false" > < div data-tocid = "id-d3752e1848" class = "topicref" data-id = "id" data-state = "not-ready" > < span role = "button" tabindex = "0" aria-labelledby = "button-expand-action id-d3752e1848-link" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/sdk/peripheral/peripheral-intro.html" id = "id-d3752e1848-link" > 外设移植< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > < span class = "ph" > CTP、U 盘、SD 卡、有线和无线网络< / span > 等外设的介绍和使用说明。< / p > < / div > < / div > < / div > < / li > < li role = "treeitem" aria-expanded = "false" > < div data-tocid = "id-d3752e2022" class = "topicref" data-id = "id" data-state = "not-ready" > < span role = "button" tabindex = "0" aria-labelledby = "button-expand-action id-d3752e2022-link" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/sdk/bringup/chapter-bringup.html" id = "id-d3752e2022-link" > BringUp< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > 主要描述板卡的各项配置，使 SDK 的环境和板卡匹配，并确保 SDK 编译后的固件能够在板子上正常运行。< / p > < / div > < / div > < / div > < / li > < li role = "treeitem" aria-expanded = "true" > < div data-tocid = "id-d3752e2418" class = "topicref" data-id = "id" data-state = "expanded" > < span role = "button" tabindex = "0" aria-labelledby = "button-collapse-action id-d3752e2418-link" class = "wh-expand-btn" > < / span > < div class = "title" > < a href = "../../../topics/sdk/chapter-advanced-app.html" id = "id-d3752e2418-link" > 高级应用< / a > < div class = "wh-tooltip" > < p class = "shortdesc" > 系统、存储、多媒体、接口、安全等模块的详细配置和设计说明。< / p > < / div > < / div > < / div > < ul role = "group" class = "navbar-nav nav-list" > < li role = "treeitem" aria-expanded = "false" > < div data-tocid = "_0-d3752e2435" class
2025-01-23 16:37:00 +08:00
< / div >
< / nav >
< div class = "col-lg-7 col-md-9 col-sm-12" id = "wh_topic_body" >
< button id = "wh_close_publication_toc_button" class = "close-toc-button d-none" aria-label = "Toggle publishing table of content" aria-controls = "wh_publication_toc" aria-expanded = "true" >
< span class = "close-toc-icon-container" >
< span class = "close-toc-icon" > < / span >
< / span >
< / button >
< button id = "wh_close_topic_toc_button" class = "close-toc-button d-none" aria-label = "Toggle topic table of content" aria-controls = "wh_topic_toc" aria-expanded = "true" >
< span class = "close-toc-icon-container" >
< span class = "close-toc-icon" > < / span >
< / span >
< / button >
2025-04-23 17:54:31 +08:00
< div class = " wh_topic_content body " > < main role = "main" > < article class = "- topic/topic concept/concept topic concept" role = "article" aria-labelledby = "ariaid-title1" >
< span class = "edit-link" style = "font-size:12px; opacity:0.6; text-align:right; vertical-align:middle" > < a target = "_blank" href = "http://aicdocco/taskstopics/sdk/mem/d13x-mem-1-sram-psram.dita" > Edit online< / a > < / span > < h1 class = "- topic/title title topictitle1" id = "ariaid-title1" > SRAM + PSRAM< / h1 >
2025-07-22 11:15:46 +08:00
< div class = "date inPage" > 16 May 2025< / div > < div style = "color: gray;" >
2025-01-23 16:37:00 +08:00
Read time: 4 minute(s)
2025-04-23 17:54:31 +08:00
< / div >
< div class = "- topic/body concept/conbody body conbody" > < p class = "- topic/shortdesc shortdesc" > < / p >
2025-07-22 11:15:46 +08:00
< div class = "- topic/p p" data-ofbid = "d168992e30__20250519091523" > 作为一种典型的内存配置使用场景， < ul class = "- topic/ul ul" id = "d13x-mem-1-sram-psram__ul_c2q_3bk_bdc" data-ofbid = "d13x-mem-1-sram-psram__ul_c2q_3bk_bdc" >
< li class = "- topic/li li" data-ofbid = "d168992e34__20250519091523" > SRAM_S0 速度较快但是容量较小，提供给软件系统使用。< / li >
< li class = "- topic/li li" data-ofbid = "d168992e37__20250519091523" > PSRAM 速度略慢但是容量较大，提供给多媒体外设模块 DE/GE/VE 作为缓存使用。< / li >
< li class = "- topic/li li" data-ofbid = "d168992e40__20250519091523" > 外设模块的 DMA 直接存取内存。< / li >
2025-04-23 17:54:31 +08:00
< / ul > < / div >
< section class = "- topic/section section" id = "d13x-mem-1-sram-psram__id7" data-ofbid = "d13x-mem-1-sram-psram__id7" > < h2 class = "- topic/title title sectiontitle" > 内存布局和使用策略< / h2 >
2025-01-23 16:37:00 +08:00
2025-04-23 17:54:31 +08:00
< figure class = "- topic/fig fig fignone" id = "d13x-mem-1-sram-psram__fig_cfz_wpj_bdc" data-ofbid = "d13x-mem-1-sram-psram__fig_cfz_wpj_bdc" >
< br / > < div class = "imagecenter" > < img class = "- topic/image image imagecenter" id = "d13x-mem-1-sram-psram__image_ypn_gcd_bdc" src = "../../../images/memory/d13x_mem_layout1.png" width = "576" alt = "d13x_mem_layout1" / > < / div > < br / >
< / figure >
2025-01-23 16:37:00 +08:00
< div class = "- topic/note note note note_note" id = "d13x-mem-1-sram-psram__note_n1h_3pj_bdc" data-ofbid = "d13x-mem-1-sram-psram__note_n1h_3pj_bdc" > < span class = "note__title" > 注：< / span >
2025-07-22 11:15:46 +08:00
< p class = "- topic/p p" data-ofbid = "d168992e60__20250519091523" > 为了减少总线冲突， < / p >
2025-01-23 16:37:00 +08:00
< / div >
2025-07-22 11:15:46 +08:00
< p class = "- topic/p p" data-ofbid = "d168992e64__20250519091523" > 如图所示，软件会使用以下策略来分配 Hardware Memory 资源：< / p >
2025-04-23 17:54:31 +08:00
< ul class = "- topic/ul ul simple" id = "d13x-mem-1-sram-psram__ul_zpn_gcd_bdc" data-ofbid = "d13x-mem-1-sram-psram__ul_zpn_gcd_bdc" >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e69__20250519091523" >
< p class = "- topic/p p" data-ofbid = "d168992e71__20250519091523" > 将 SRAM 的 < code class = "+ topic/ph pr-d/codeph ph codeph" > SRAM_S0 Region< / code > 区域提供给系统软件使用。< / p >
2025-04-23 17:54:31 +08:00
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e78__20250519091523" >
< div class = "- topic/p p" data-ofbid = "d168992e80__20250519091523" > 将 PSRAM 分成两个区域： < ul class = "- topic/ul ul" id = "d13x-mem-1-sram-psram__ul_qth_rbk_bdc" data-ofbid = "d13x-mem-1-sram-psram__ul_qth_rbk_bdc" >
< li class = "- topic/li li" data-ofbid = "d168992e84__20250519091523" > < code class = "+ topic/ph pr-d/codeph ph codeph" > PSRAM Software Region< / code > ：在 SRAM 不够系统软件用的情况下补充划分一部分
2025-04-23 17:54:31 +08:00
PSRAM 给软件使用。< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e89__20250519091523" > < code class = "+ topic/ph pr-d/codeph ph codeph" > PSRAM CMA Region< / code > ：专供多媒体模块 MPP 使用< / li >
2025-04-23 17:54:31 +08:00
< / ul > < / div >
2025-07-22 11:15:46 +08:00
< p class = "- topic/p p" data-ofbid = "d168992e95__20250519091523" > 上述区域划分可将 MPP 的动态内存池 (heap_cma) 和系统动态内存池 (heap_sys) 分离，避免 MPP
2025-01-23 16:37:00 +08:00
的内存池碎片化。MPP 的内存分配基本是大块内存，而系统各模块的内存分配是各种尺寸大小都有，如果共享一个内存池容易造成 MPP 大块内存分配失败。< / p >
2025-04-23 17:54:31 +08:00
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e99__20250519091523" >
< div class = "- topic/p p" data-ofbid = "d168992e101__20250519091523" > 将每个 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > Region< / span > 进一步划分成以下子区域：< ul class = "- topic/ul ul" id = "d13x-mem-1-sram-psram__ul_sd4_tzj_bdc" data-ofbid = "d13x-mem-1-sram-psram__ul_sd4_tzj_bdc" >
< li class = "- topic/li li" data-ofbid = "d168992e108__20250519091523" > 静态分配 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > Static< / span > ：编译链接后可确认地址。< / li >
< li class = "- topic/li li" data-ofbid = "d168992e114__20250519091523" > 动态分配 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > Heap< / span > ： < / li >
2025-04-23 17:54:31 +08:00
< / ul > < / div >
< / li >
< / ul >
2025-07-22 11:15:46 +08:00
< div class = "- topic/p p" data-ofbid = "d168992e124__20250519091523" > 最终 SRAM_S0 空间被软件划分成两块区域， < ul class = "- topic/ul ul" id = "d13x-mem-1-sram-psram__ul_bqn_gcd_bdc" data-ofbid = "d13x-mem-1-sram-psram__ul_bqn_gcd_bdc" >
< li class = "- topic/li li" data-ofbid = "d168992e128__20250519091523" >
< p class = "- topic/p p" data-ofbid = "d168992e130__20250519091523" > < code class = "+ topic/ph pr-d/codeph ph codeph" > SRAM_S0 SW Static< / code > ：系统静态分配区域。 < / p >
< p class = "- topic/p p" data-ofbid = "d168992e135__20250519091523" > 默认存放
2025-01-23 16:37:00 +08:00
< span class = "+ topic/keyword pr-d/parmname keyword parmname" > .text< / span > ， < span class = "+ topic/keyword pr-d/parmname keyword parmname" > .rodata< / span > ， < span class = "+ topic/keyword pr-d/parmname keyword parmname" > .data< / span > 和
< span class = "+ topic/keyword pr-d/parmname keyword parmname" > .bss< / span > 参数，即普通的函数定义和全局变量定义。< / p >
2025-04-23 17:54:31 +08:00
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e151__20250519091523" >
< p class = "- topic/p p" data-ofbid = "d168992e153__20250519091523" > < code class = "+ topic/ph pr-d/codeph ph codeph" > SRAM_S0 SW Heap< / code > ：系统动态分配区域，即 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > heap_sys< / span >
2025-01-23 16:37:00 +08:00
内存池。< / p >
2025-07-22 11:15:46 +08:00
< div class = "- topic/p p" data-ofbid = "d168992e161__20250519091523" > 通过以下函数可以从该内存池分配内存。< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_ud5_cmj_bdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_ud5_cmj_bdc" > malloc(size);
2025-01-23 16:37:00 +08:00
aicos_malloc(MEM_DEFAULT, size); < em class = "hl-comment" > // MEM_DEFAULT = 0< / em > < / pre > < / div >
2025-04-23 17:54:31 +08:00
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e167__20250519091523" >
< p class = "- topic/p p" data-ofbid = "d168992e169__20250519091523" > < code class = "+ topic/ph pr-d/codeph ph codeph" > PSRAM SW Static< / code > ：系统静态分配区域，属于可选区域，通常情况下未配置。< / p >
< div class = "- topic/p p" data-ofbid = "d168992e174__20250519091523" > 通过加上 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > PSRAM_SW_DATA_DEFINE< / span >
2025-01-23 16:37:00 +08:00
宏声明可以将函数定义和全局变量定义链接到本区域：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_lm5_kpj_bdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_lm5_kpj_bdc" > < em class = "hl-comment" > // 函数定义：< / em >
< strong class = "hl-keyword" > void< / strong > PSRAM_SW_DATA_DEFINE test_func(< strong class = "hl-keyword" > void< / strong > );
< em class = "hl-comment" > // 全局变量定义：< / em >
PSRAM_SW_DATA_DEFINE < strong class = "hl-keyword" > int< / strong > a = < span class = "hl-number" > 1< / span > ;< / pre > < / div >
2025-04-23 17:54:31 +08:00
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e183__20250519091523" >
< p class = "- topic/p p" data-ofbid = "d168992e185__20250519091523" > < code class = "+ topic/ph pr-d/codeph ph codeph" > PSRAM SW Heap< / code > ：系统动态分配区域，即 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > heap_psram_sw< / span >
2025-01-23 16:37:00 +08:00
内存池，属于可选区域，通常情况下没有配置。< / p >
2025-07-22 11:15:46 +08:00
< div class = "- topic/p p" data-ofbid = "d168992e193__20250519091523" > 通过以下函数可以从该内存池分配内存。
2025-01-23 16:37:00 +08:00
< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_lvz_kpj_bdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_lvz_kpj_bdc" > aicos_malloc(MEM_PSRAM_SW, size);< / pre > < / div >
2025-04-23 17:54:31 +08:00
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e199__20250519091523" >
< div class = "- topic/p p" data-ofbid = "d168992e201__20250519091523" > < code class = "+ topic/ph pr-d/codeph ph codeph" > PSRAM CMA Static< / code > ： < ul class = "- topic/ul ul" data-ofbid = "d168992e205__20250519091523" >
< li class = "- topic/li li" data-ofbid = "d168992e207__20250519091523" > 在 SRAM_S0 空间不够用时，通过 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > menuconfig< / span > 配置菜单将
2025-01-23 16:37:00 +08:00
< span class = "+ topic/keyword pr-d/parmname keyword parmname" > .text< / span > 、< span class = "+ topic/keyword pr-d/parmname keyword parmname" > .rodata< / span > 、< span class = "+ topic/keyword pr-d/parmname keyword parmname" > .data< / span >
2025-04-23 17:54:31 +08:00
和 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > .bss< / span > 放置到 PSRAM 中，可以链接到本区域。< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e225__20250519091523" > 通过加上 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > CMA_DATA_DEFINE< / span >
2025-01-23 16:37:00 +08:00
宏声明，可以将函数定义和全局变量定义链接到本区域。< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_iqn_gcd_bdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_iqn_gcd_bdc" > < em class = "hl-comment" > // 函数定义：< / em >
< strong class = "hl-keyword" > void< / strong > CMA_DATA_DEFINE test_func(< strong class = "hl-keyword" > void< / strong > ); < em class = "hl-comment" > // CMA_DATA_DEFINE = PSRAM_CMA_DATA_DEFINE< / em >
< em class = "hl-comment" > // 全局变量定义：< / em >
2025-04-23 17:54:31 +08:00
CMA_DATA_DEFINE < strong class = "hl-keyword" > int< / strong > a = < span class = "hl-number" > 1< / span > ;< / pre > < / li >
< / ul > < / div >
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e236__20250519091523" >
< p class = "- topic/p p" data-ofbid = "d168992e238__20250519091523" > < code class = "+ topic/ph pr-d/codeph ph codeph" > PSRAM CMA Heap< / code > ： < span class = "+ topic/keyword pr-d/parmname keyword parmname" > heap_cma< / span >
2025-01-23 16:37:00 +08:00
内存池。< / p >
2025-07-22 11:15:46 +08:00
< div class = "- topic/p p" data-ofbid = "d168992e246__20250519091523" > 通过以下函数可以从该内存池分配内存。< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_kmm_lpj_bdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_kmm_lpj_bdc" > aicos_malloc(MEM_CMA, size); < em class = "hl-comment" > // MEM_CMA = MEM_PSRAM_CMA< / em > < / pre > < / div >
2025-04-23 17:54:31 +08:00
< / li >
< / ul > < / div >
< / section >
< section class = "- topic/section section" id = "d13x-mem-1-sram-psram__id9" data-ofbid = "d13x-mem-1-sram-psram__id9" > < h2 class = "- topic/title title sectiontitle" > 参数配置< / h2 >
2025-01-23 16:37:00 +08:00
2025-07-22 11:15:46 +08:00
< div class = "- topic/p p" data-ofbid = "d168992e259__20250519091523" > 通过 < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > scons --menuconfig< / span > 命令进入 menuconfig
2025-01-23 16:37:00 +08:00
配置界面，配置下列 Meomry
相关参数：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_rpw_yxm_mdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_rpw_yxm_mdc" > Board options --->
Mem Options ---> < / pre > < / div >
2025-04-23 17:54:31 +08:00
< ul class = "- topic/ul ul" id = "d13x-mem-1-sram-psram__ul_nqn_gcd_bdc" data-ofbid = "d13x-mem-1-sram-psram__ul_nqn_gcd_bdc" >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e269__20250519091523" >
< p class = "- topic/p p" data-ofbid = "d168992e271__20250519091523" > SRAM_S0 总大小< / p >
2025-01-23 16:37:00 +08:00
< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_oyp_lpj_bdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_oyp_lpj_bdc" > SRAM parameter --->
(< span class = "hl-number" > 0x100000< / span > ) SRAM Total Size < em class = "hl-comment" > // 配置 SRAM 总大小为 1M< / em >
SRAM_S1 Size (< span class = "hl-number" > 0< / span > K) < em class = "hl-comment" > // 配置 SRAM_S1 大小为 0， < / em > < / pre >
2025-04-23 17:54:31 +08:00
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e278__20250519091523" >
< p class = "- topic/p p" data-ofbid = "d168992e280__20250519091523" > PSRAM 总大小< / p >
2025-01-23 16:37:00 +08:00
< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_kwr_lpj_bdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_kwr_lpj_bdc" > PSRAM parameter --->
(< span class = "hl-number" > 0x800000< / span > ) PSRAM size < em class = "hl-comment" > // 配置 PSRAM 总大小为 8M< / em > < / pre >
2025-04-23 17:54:31 +08:00
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e287__20250519091523" >
< p class = "- topic/p p" data-ofbid = "d168992e289__20250519091523" > CMA 区域大小< / p >
2025-01-23 16:37:00 +08:00
< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_qp5_lpj_bdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_qp5_lpj_bdc" > PSRAM parameter --->
(< span class = "hl-number" > 0x0< / span > ) Software size in PSRAM < em class = "hl-comment" > // 配置 PSRAM 开头 Software 区域大小为 0， < / em > < / pre >
2025-04-23 17:54:31 +08:00
< / li >
2025-07-22 11:15:46 +08:00
< li class = "- topic/li li" data-ofbid = "d168992e296__20250519091523" >
< p class = "- topic/p p" data-ofbid = "d168992e298__20250519091523" > 可将 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > .text< / span > 、< span class = "+ topic/keyword pr-d/parmname keyword parmname" > .rodata< / span > 、< span class = "+ topic/keyword pr-d/parmname keyword parmname" > .data< / span > 和
2025-01-23 16:37:00 +08:00
< span class = "+ topic/keyword pr-d/parmname keyword parmname" > .bss< / span > 区域配置到 SRAM_S0/PSRAM 中：< / p >
< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_jtw_lpj_bdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_jtw_lpj_bdc" > ELF Sections memory locatio --->
Section .text (SRAM_S0) --->
Section .rodata (SRAM_S0) --->
Section .data (SRAM_S0) --->
Section .bss (PSRAM) --->
( ) SRAM_S0
(X) PSRAM < em class = "hl-comment" > // 在 SRAM 空间不足的情况下，选择把几部分数据存放到 PSRAM 当中< / em > < / pre >
2025-04-23 17:54:31 +08:00
< / li >
< / ul >
< / section >
< section class = "- topic/section section" id = "d13x-mem-1-sram-psram__id10" data-ofbid = "d13x-mem-1-sram-psram__id10" > < h2 class = "- topic/title title sectiontitle" > 调试命令< / h2 >
2025-01-23 16:37:00 +08:00
< div class = "- topic/div div" >
2025-07-22 11:15:46 +08:00
< div class = "- topic/div div" > < strong class = "+ topic/ph hi-d/b ph b" > 查看内存布局< / strong > < div class = "- topic/p p" data-ofbid = "d168992e331__20250519091523" > 在工程编译时，可以通过下列命令来查看当前工程的内存布局：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_ygy_j1n_mdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_ygy_j1n_mdc" > scons --list-mem< / pre > < / div > < / div >
< div class = "- topic/p p" data-ofbid = "d168992e336__20250519091523" > 输出结果示例如下所示：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_y21_4vm_mdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_y21_4vm_mdc" > scons: Reading SConscript files ...
2025-01-23 16:37:00 +08:00
output/d13x_demo88-nor_rt-thread_helloworld/images/d13x.elf Memory layout:
Region Start End Length
sram_s0 < span class = "hl-number" > 0x30040000< / span > - < span class = "hl-number" > 0x30140000< / span > < span class = "hl-number" > 0x00100000< / span >
└─ sram_s0_static < span class = "hl-number" > 0x30040000< / span > - < span class = "hl-number" > 0x300ec1f8< / span > < span class = "hl-number" > 0x000ac1f8< / span >
└─ .text < span class = "hl-number" > 0x30040000< / span > - < span class = "hl-number" > 0x300ca3c0< / span > < span class = "hl-number" > 0x0008a3c0< / span >
└─ .rodata < span class = "hl-number" > 0x300ca430< / span > - < span class = "hl-number" > 0x300ea7b0< / span > < span class = "hl-number" > 0x00020380< / span >
└─ .data < span class = "hl-number" > 0x300ea7c0< / span > - < span class = "hl-number" > 0x300ec1f8< / span > < span class = "hl-number" > 0x00001a38< / span >
└─ sram_s0_heap < span class = "hl-number" > 0x300ec1f8< / span > - < span class = "hl-number" > 0x30140000< / span > < span class = "hl-number" > 0x00053e08< / span >
└─ .heap_sys < span class = "hl-number" > 0x300ec1f8< / span > - < span class = "hl-number" > 0x30140000< / span > < span class = "hl-number" > 0x00053e08< / span >
psram < span class = "hl-number" > 0x40000000< / span > - < span class = "hl-number" > 0x40800000< / span > < span class = "hl-number" > 0x00800000< / span >
└─ psram_cma < span class = "hl-number" > 0x40000000< / span > - < span class = "hl-number" > 0x40800000< / span > < span class = "hl-number" > 0x00800000< / span >
└─ psram_cma_static < span class = "hl-number" > 0x40000000< / span > - < span class = "hl-number" > 0x40010348< / span > < span class = "hl-number" > 0x00010348< / span >
└─ .bss < span class = "hl-number" > 0x40000000< / span > - < span class = "hl-number" > 0x40010348< / span > < span class = "hl-number" > 0x00010348< / span >
└─ psram_cma_heap < span class = "hl-number" > 0x40010348< / span > - < span class = "hl-number" > 0x40800000< / span > < span class = "hl-number" > 0x007efcb8< / span >
└─ .heap_cma < span class = "hl-number" > 0x40010348< / span > - < span class = "hl-number" > 0x40800000< / span > < span class = "hl-number" > 0x007efcb8< / span > < / pre > < / div >
< / div >
2025-07-22 11:15:46 +08:00
< div class = "- topic/div div" > < strong class = "+ topic/ph hi-d/b ph b" > 查看内存池的运行情况< / strong > < div class = "- topic/p p" data-ofbid = "d168992e345__20250519091523" > 在系统运行时，可以通过 RT-Thread 下的
2025-01-23 16:37:00 +08:00
< span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > free< / span > 命令来查看 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > heap_sys< / span > 和
< span class = "+ topic/keyword pr-d/parmname keyword parmname" > heap_cma< / span >
2025-07-22 11:15:46 +08:00
内存池的运行情况：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_free_command" data-ofbid = "d13x-mem-1-sram-psram__codeblock_free_command" > free< / pre > < / div > < div class = "- topic/p p" data-ofbid = "d168992e358__20250519091523" > 结果输出示例如下：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "d13x-mem-1-sram-psram__codeblock_omg_kkj_bdc" data-ofbid = "d13x-mem-1-sram-psram__codeblock_omg_kkj_bdc" > memheap pool size max used size available size
2025-01-23 16:37:00 +08:00
---------------- ---------- ------------- --------------
heap_cma < span class = "hl-number" > 8362744< / span > < span class = "hl-number" > 48< / span > < span class = "hl-number" > 8362696< / span >
heap_sys < span class = "hl-number" > 758948< / span > < span class = "hl-number" > 50384< / span > < span class = "hl-number" > 710780< / span > < / pre > < / div > < / div >
2025-04-23 17:54:31 +08:00
< / section >
< / div >
< / article > < / main > < / div >
2025-01-23 16:37:00 +08:00
< / div >
< nav role = "navigation" id = "wh_topic_toc" aria-label = "On this page" class = "col-lg-2 d-none d-lg-block navbar d-print-none" >
< div id = "wh_topic_toc_content" >
< div class = " wh_topic_toc " > < div class = "wh_topic_label" > 在本页上< / div > < ul > < li class = "section-item" > < div class = "section-title" > < a href = "#d13x-mem-1-sram-psram__id7" data-tocid = "d13x-mem-1-sram-psram__id7" > 内存布局和使用策略< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#d13x-mem-1-sram-psram__id9" data-tocid = "d13x-mem-1-sram-psram__id9" > 参数配置< / a > < / div > < / li > < li class = "section-item" > < div class = "section-title" > < a href = "#d13x-mem-1-sram-psram__id10" data-tocid = "d13x-mem-1-sram-psram__id10" > 调试命令< / a > < / div > < / li > < / ul > < / div >
< / div >
< / nav >
< / div >
< / div >
< / div >
< footer class = "navbar navbar-default wh_footer" >
< div class = " footer-container mx-auto " >
< title > footer def< / title >
2025-04-23 17:54:31 +08:00
< style >
2025-01-23 16:37:00 +08:00
.p1 {
font-family: FangZhengShuSong, Times, serif;
}
.p2 {
font-family: Arial, Helvetica, sans-serif;
}
.p3 {
font-family: "Lucida Console", "Courier New", monospace;
}
2025-04-23 17:54:31 +08:00
< / style >
2025-01-23 16:37:00 +08:00
< div class = "webhelp.fragment.footer" >
2025-04-23 17:54:31 +08:00
< p class = "p1" > Copyright © 2019-2025 广东匠芯创科技有限公司. All rights reserved.< / p >
< / div >
< div >
2025-01-23 16:37:00 +08:00
< div class = "generation_time" >
2025-07-22 11:15:46 +08:00
Update Time: 2025-05-19
2025-01-23 16:37:00 +08:00
< / div >
2025-04-23 17:54:31 +08:00
< / div >
2025-01-23 16:37:00 +08:00
< / div >
< / footer >
< div id = "go2top" class = "d-print-none" >
< span class = "oxy-icon oxy-icon-up" > < / span >
< / div >
< div id = "modal_img_large" class = "modal" >
< span class = "close oxy-icon oxy-icon-remove" > < / span >
< div id = "modal_img_container" > < / div >
< div id = "caption" > < / div >
< / div >
< script src = "${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer = "defer" > < / script >
< / body >
< / html >
